#app {
  text-align: center;
  border-radius: 5px;
  border-color: red;
  border-width: 1px;
  border-style: solid;
  width: 60%;

  margin: 0 auto;
  margin-top: 80px;
}

input {
  margin: 0 auto;
  margin-top: 10px;
  margin-bottom: 10px;
}

.input-error {
  border: solid 1px red;
}

button {
  margin-bottom: 10px;
}